Table 1.

The primer sequences of the target gene and internal reference gene

	Forward	Reverse
MMP9	5′-GGGACGCAGACATCGTCATC-3′	5′-TCGTCATCGTCGAAATGGGC-3′
E-cadherin	5′-TGCTCTTCCAGGAACCTCTGTG-3′	5′-GGTGACCACACTGATGACTCCTG-3′
vimentin	5′-GGGACCTCTACGAGGAGGAG-3′	5′-CGCATTGTCAACATCCTGTC-3′
β-actin	5′-TTAGTTGCGTTACACCCTTTC-3′	5′-ACCTTCACCGTTCCAGTTT-3′